public function unregisterNamespace($prefix)
{
throw new UnsupportedRepositoryOperationException('Unregistering namespace not supported by jackrabbit backend');
/*
* TODO: could look a bit like the following if the backend would support it
$request = $this->getRequest(Request::PROPPATCH, $this->workspaceUri);
// seems jackrabbit always expects full list of namespaces
$namespaces = $this->getNamespaces();
unset($namespaces[$prefix]);
$request->setBody($this->buildRegisterNamespaceRequest($namespaces));
$request->execute();
*/
}